During retinoscopy of a 30 year old male, which cycloplegic is used routinely-

Cyclopentolate is a sho acting cycloplegic. Its effect lasts for 6 to 18 hours. It is used as 1 percent eyedrops in patients between 8 and 20 years of age. One drop of cyclopentolate is instilled after every 10-15 minutes for 3 times (Havener's recommended dose) and the retinoscopy is performed 1 to 1/ 1/2 hours or 60 to 90 min. later, after estimating the residual accommodation which should not exceed one dioptre. Reference : A K KHURANA OPHTALMOLOGY,Edition 4,Page-550